JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Guangli Li,Nayu Chen,Yafeng Zhang,Tianyu Wang,Rui Zhu,Yuan Jin,Nanke Ma
Rhodamine B (RhB) is highly carcinogenic and is therefore prohibited as a food colorant. Hence, it is necessary to establish a simple but effective technique for the sensitive determination of RhB in foodstuff. Herein, an efficient voltammetric platform was established for the detection of RhB in chili oil based on flower-like β-Bi 2 O 3 microsphere/multiwalled carbon nanotube composites (β-Bi 2 O 3 /MWCNTs). Various microscopic and spectroscopic techniques confirmed the successful formation of β-Bi 2 O 3 /MWCNTs. Owing to the synergistic effect from β-Bi 2 O 3 microspheres and MWCNTs, the β-Bi 2 O 3 /MWCNTs demonstrated superior electrocatalytic activity for the oxidation of RhB as compared to the individual components. Electrochemical kinetics tests confirmed that the RhB electrooxidation was governed by an irreversible and adsorption-controlled process, and involved two electrons one proton transfer pathway. The oxidation peak currents of RhB were linearly correlated with RhB concentrations ranging from 0.05 to 100 μM with a low limit of detection (0.002 μM). The β-Bi 2 O 3 /MWCNT demonstrated strong anti-interfering ability against other azo colorants, and retained robust voltammetric responses for at least 14 days. Moreover, the concentrations of RhB in chili oil were accurately detected by the β-Bi 2 O 3 /MWCNT via second-order derivative linear scan voltammetry with satisfactory recovery. Overall, the β-Bi 2 O 3 /MWCNT/GCE shows great potential for in-situ analysis of trace amounts of RhB in various food matrices.
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2024
·
IF 2.9
Mewin Vincent,Venkata Sai Avvaru,Maciej Haranczyk,Vinodkumar Etacheri
Although Mg-Li dual metal-ion batteries are proposed as a superior system that unite safety of Mg-batteries and performance of Li-ion based systems, its practical implantation is limited due to the lack of reliable high performance cathodes. Herein, we report a high-performance Mg-Li dual metal-ion battery system based on highly pseudocapacitive hierarchical TiO2-B nanosheet assembled spheres (NS) cathode. This 2D cathode displayed exceptional pseudocapacitance (a maximum of 93%) specific capacity (303 mAh/g at 25 mA/g), rate performance (210 mAh/g at 1A/g), consistent cycling (retain ~100% capacity for 3000 cycles at 1A/g), coulombic efficiency (nearly 100%) and fast-charging (~12.1 min). These properties are remarkably dominant to the existing Mg-Li dual metal-ion battery cathodes. Spectroscopic and microscopic mechanistic studies confirmed negligible structural changes during charge-discharge cycles of the TiO2-B nanosheet assembled spheres electrodes. Exceptional electrochemical properties of the 2D electrode is ascribed to remarkable pseudocapacitive Mg-Li dual metal-ion diffusion via the numerous nanointerfaces of TiO2-B caused by its hierarchical microstrucrure. Large surface area, nanosheet morphology, mesoporous structure and ultrathin nature also acted as secondary factors facilitating improved electrode-electrolyte contact. Demonstrated approach of pseudocapacitive type Mg-Li dual metal-ion intercalation through hierarchical nanointerfaces may be further utilized for the designing of numerous top-notch electrode materials for futuristic Mg-Li dual metal-ion batteries
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Miaomiao Chen,Huili Zhao,Han Xue,Yan Liang,Min Ji,Min Wang
B(C6F5)3-based frustrated Lewis pairs (FLPs) have made remarkable progress in metal-free catalytic reduction. However, the high affinity of B(C6F5)3 for oxygen makes it susceptible to irreversible poisoning when exposed to H2O, limiting its widespread application in reductive amination. To overcome the influence of H2O, a hydrophobic catalyst, B(C6F5)3@Rn–1-MIL-101 (n = 3, 5, 7), was developed by confining B(C6F5)3 within the nanocages of metal–organic frameworks (MOFs) modified with alkyl chains. The hydrophobic strength of the catalyst could be adjusted by varying the length of the alkyl chain. At n = 3, the alkyl chain was too short to be hydrophobic, while the excessively long alkyl chain blocked the pore channels and adversely affected the loading of B(C6F5)3 at n = 7. Only the catalyst B(C6F5)3@R4-MIL-101 synthesized at n = 5 could effectively facilitate the reductive amination of aldehydes or ketones with amines in a “wet solvent.” The strategy of combining hydrophobic MOFs with B(C6F5)3 to prepare heterogeneous catalysts for FLP catalysis not only provides a fresh avenue for investigating catalytic systems for reductive amination but also represents an innovative approach to advancing FLP chemistry.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOPROCESS AND BIOSYSTEMS ENGINEERING
·
2024
·
IF 3.5
Liu Jiale,Zhao Shufan,Wei Wan,Yu Shupeng,Wang Zhao,Zheng Jianyong
Lipase is one of the most widely studied and applied biocatalysts. Due to the high enzyme leakage rate of the immobilization method of physical adsorption, we propose a new lipase immobilization method, based on the combination of macroporous resin adsorption and organic polymer coating. The immobilized Candida antarctica lipase B (CALB@resin-CAB) was prepared by combining the macroporous resin adsorption with cellulose acetate butyrate coating, and its structure was characterized by various analytic methods. Immobilized lipase was applied for biodiesel production using acidified palm oil as the starting material, the conversion rate achieved as high as 98.5% in two steps. Furthermore, the immobilized lipase displayed satisfactory stability and reusability in biodiesel production. When the aforementioned reaction was carried out in a continuous flow packed bed system, the yield of biodiesel was 94.8% and space–time yield was 2.88 g/(mL∙h). The immobilized lipase CALB@resin-CAB showed high catalytic activity and stability, which has good potential for industrial application in the field of oil processing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2024
·Vol. 130
·期 4
·1-10
·
IF 2.5
Song Wenqiang,Zhao Fengjiao,Xu Changyuan,Wang Qun,Yin Hongming
For photoluminescence (PL) properties of Mn 2+ in glass–ceramics are highly dependent on the concentration of Mn 2+ , we experimentally observed the change of Mn 2+ structures from isolated Mn 2+ ion as a tetrahedron, octahedron to Mn 2+ -Mn 2+ dimer in B-P-Zn-K based glass–ceramics with characteristic PL peaks locating at 504 nm, 600 nm, and 660 nm, respectively. Spectral results reveal that condensed Mn 2+ would lead to redshift of PL emission and reduced Luminous intensity caused by concentration quenching, however, with increasing Mn 2+ content, shift of Mn 2+ structure is the determining factor for PL redshift. Moreover, compared with tetrahedral and octahedral Mn 2+ , Mn 2+ -Mn 2+ dimer exhibits highly enhanced PL emission and shortened life span which reveal that transitions of Mn 2+ -Mn 2+ dimer are far more efficient than those transitions in tetrahedral and octahedral Mn 2+ . This enables tuning of color and efficiency of PL emission for Mn-doped glass–ceramics via a simple method. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
LUMINESCENCE
·
2024
·Vol. 39
·期 1
·e4675
·
IF 3.2
Gerile Oudeng,Junguo Ni,Hao Wu,Honglian Wu,Mo Yang,Chunyi Wen,Yuanwei Wang,Hui Tan
The coronavirus disease-2019 pandemic reflects the underdevelopment of point-of-care diagnostic technology. Nuclei acid (NA) detection is the “gold standard” method for the early diagnosis of the B.1.1.529 (Omicron) variant of severe acute respiratory syndrome-coronavirus disease-2. Polymerase chain reaction is the main method for NA detection but requires considerable manpower and sample processing taking ≥ 3 h. To simplify the operation processes and reduce the detection time, exonuclease III (Exo III)-aided MoS 2 /AIE nanoprobes were developed for rapid and sensitive detection of the oligonucleotides of Omicron. Molybdenum disulfide (MoS 2 ) nanosheets with excellent optical absorbance and distinguishable affinity to single-strand and duplex DNAs were applied as quenchers, and aggregation-induced emission (AIE) molecules with high luminous efficiency were designed as donor in fluorescence resonance energy transfer-based nanoprobes. Exo III with catalytic capability was used for signal amplification to increase the sensitivity of detection. The composite nanoprobes detected the mutated nucleocapsid (N)-gene and spike (S)-gene oligonucleotides of Omicron within 40 min with a limit of detection of 4.7 pM, and showed great potential for application in community medicine.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 8
·1-10
·
IF 5.3
An Jia,Yuan Mengdi,Han Yaqin,Liu Yufei
The rampant hepatitis B virus (HBV) seriously endangers human health, and hepatitis B surface antigen (HBsAg) is its early diagnostic marker. Therefore, it is crucial to construct a fast and highly sensitive HBsAg detection method. Based on high-efficiency magnetic separation technology and fluorescent composite material labelling technology, an accurate, fast and sensitive fluorescent immunosensing system for HBsAg detection was developed. Immunomagnetic beads constructed from carboxyl-functionalized Fe 3 O 4 nanoparticles (Fe 3 O 4 -COOH) with excellent magnetic response performance were used as efficient capture carriers for HBsAg. Immunofluorescence composite microspheres constructed based on ultra-stable polystyrene-coated CsPbBr 3 perovskite nanocrystals (CPB@PSAA) with high hydrophilic properties, were excellent fluorescent markers for HBsAg. Using this sensitive sandwich fluorescence sensing system a good linear relationship within the range of 0.2–15 ng/mL was established between HBsAg concentration and fluorescence intensity with a limit of detection (LOD) of 0.05 ng/mL. The system obtained satisfactory results when tested on real human serum samples. The magnetic-assisted fluorescence immune-sandwich sensor system has broad application prospects in biomedicine such as rapid and early diagnosis and effective prevention of infectious diseases. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 30
·43249-43261
·
IF 0
Liu Qiong,Li Xinghang
Carbon materials have been receiving considerable attention as effective green catalysts for peroxydisulfate (PDS) activation to degrade organic pollutants. Herein, the porous graphene-like carbons (PGCs) were synthesized by pyrolyzing a nitrogen-rich biomass (peanut shell, PS) in the eutectic mixture of FeCl 3 and ZnCl 2 . The results suggested that involvement of molten salts attributed the biochar the amazing properties such as high specific surface area ( S BET = 2529.4 m 2 g −1 ), abundant structural defects, high nitrogen content (6.5%), and oxygen-containing functional groups on its surface. Especially when pyrolyzed at activation temperature of 800 °C, mass ratio of 1:3:15 (PS:ZnCl 2 :FeCl 3 ), and activation time of 2 h, the optimized PGCs-op exhibited outstanding performance in the catalytic degradation of rhodamine B (RhB). Almost all of RhB (99.02%) was removed in 40 min and basically not influenced by initial pH in the range of 3.00 to 9.98. Although the RhB degradation was influenced by anions (Cl − , HCO 3 − , HPO 4 2− ), the inhibition would be significantly alleviated within 120 min unless these substances were high in concentration. Furthermore, the quenching tests revealed that the reactive species were involved in RhB degradation in the sequence of 1 O 2 > O 2 ∙− > SO 4 ∙− > ∙OH, among which singlet oxygen played a crucial role. Combined with characterization analysis, a possible mechanism of RhB degradation in PGCs-op/PDS system was proposed. Overall, this study provided a promising metal-free catalyst for the removal of organic pollutants while achieving reutilization of the waste biomass. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Yingying Li,Yali Liu,Ai Liu,Changjie Xu,Chijian Zhang,Jianyong Yu,Ruchao Yuan,Faxue Li
Introducing the renewable poly(trimethylene ether glycol) (PO3G) as soft segments into bio-based poly(propylene terephthalate) (PTT), which is synthesized from the bio-based propylene glycol (PDO) monomer, results in thermoplastic polyester elastomers (PTT-PO3G) with superior thermomechanical properties. As the PO3G content in PTT-PO3G copolymers increased from 20 wt% to 60 wt%, the melting temperatures of these copolymers decreased from 220 to 174°C, and the tensile strength decreased from 31.7 to 4.2 MPa with the Shore hardness falling from 60 to 26 D, whereas the elongation at break showed an increase tendency from 697 % to 1074 %. Characterizations utilizing dynamic thermomechanical analysis (DMA), small angle X-ray scattering (SAXS), and atomic force microscopy (AFM) revealed the presence of microphase separations in PTT-PO3G copolymers. The strength and moisture regain of PTT-PO3G-20 elastic fibers fabricated via an eco-friendly melt spinning technique reach 1.42 cN/dtex and 1.52 %, which are 58 % and 407 % higher than those of traditional wet-spun Spandex® fibers, respectively. Surprisedly, the resilience of PTT-PO3G-20 fibers exceeded 96 % at an elongation of 20 %, demonstrating its promising potential as a sustainable alternative to Spandex® fibers in textile applications. The excellent thermodynamic properties indicate that the bio-based PTT-PO3G copolymers have great potential to replace traditional petroleum-based elastomers for promoting the sustainable and low-carbon global development.
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2024
·Vol. 19
·期 15
·e202400482
·
IF 3.5
Jiahua Wu,Xuan Yang,Dong Xu,Say Leong Ong,Jiangyong Hu
While numerous persulfate-based advanced oxidation processes (AOPs) have been studied based on fancy catalysts, the practical combination of Fe or Mn modified granular activated carbon (GAC) has seldom been investigated. The present study focused on a green and readily synthesized Fe−Mn bimetallic oxide doped GAC (Fe−Mn@GAC), to uncover its catalytic kinetics and mechanism when used in the peroxydisulfate (PDS)-based oxidation process for degrading Rhodamine B (RhB), a representative xenobiotic dye. The synthesized Fe−Mn@GAC was characterized by SEM-EDS, XRD, ICP-OES and XPS analyses to confirm its physicochemical properties. The catalytic kinetics of Fe−Mn@GAC+PDS system were evaluated under varying conditions, including PDS and catalyst dosages, solution pH, and the presence of anions. It was found Fe−Mn@GAC exhibited robust catalytic performance, being insensitive to a wide pH range from 3 to 11, and the presence of anions such as Cl − , SO 4 2− , NO 3 − and CO 3 2− . The catalytic mechanism was investigated by EPR and quenching experiments. The results indicated the catalytic system processed a non-radical oxidation pathway, dominated by direct electron transfer between RhB and Fe−Mn@GAC, with singlet oxygen ( 1 O 2 ) playing a secondary role. The catalytic system also managed to maintain a RhB removal above 81 % in successive 10 cycles, and recover to 89.5 % after simple DI water rinse, showing great reusability. The catalytic system was further challenged by real dye-containing wastewater, achieving a decolorization rate of 84.5 %. This work not only provides fresh insight into the kinetics and mechanism of the Fe−Mn@GAC+PDS catalytic system, but also demonstrates its potential in the practical application in real dye-containing wastewater treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xinyu Wang,Rui Li,Guoqing Zhao,Xiaorong Yan,Mingsheng Yang,Bei Wang,Haiping Yu,Mengxiao Li,Yuxin Hao,Zhihui Wang,Jingru Liu,Mingjun Hu,Jun Yang
Organic electrode materials are considered as a promising alternative to conventional transition metal-based electrodes because of their low cost, adjustable structure, high specific capacity, and good sustainability. However, many organic molecule electrodes and their corresponding discharge products can be easily dissolved in liquid electrolytes, leading to severe shuttle effect and performance decay. Here, we designed a separator with double carbon layer modification. The first layer is a B 4 O 7 2− cross-linked GO layer, which serves as a barrier to prevent organic small molecules from passing through the separator attributed to physical blocking and electrostatic repulsion. The second layer is a carbon nanotube layer, which mainly acts as an absorbing layer and upper current collector attributed to porous structure and good conductivity. The synergistic effect of double carbon layer enables the GO-B 4 O 7 2− @CNT-modified separator to effectively inhibit the shuttling of small molecules while maintaining their intrinsic electrochemical performance. Three soluble organic electrode materials with different molecular sizes, including 2,3,5,6-tetraamino-benzoquinone (TABQ), 9,10-anthraquinone (AQ), and 3,4,9,10-perylenetetracarboxylic diimide (PTCDI), were used as model molecules to validate the availability of modified separator, and the results shows that their cycling stability, specific capacity and rate capability were enhanced significantly after using the separator. Such simple cost-effective separator modification method will substantially promote the battery performance and facilitate the application of organic small molecule electrodes for energy storage.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICO-BIOLOGICAL INTERACTIONS
·
2024
·
IF 4.7
Hong Ding,Xuanxiao Lu,Xiaoguo Ji,Shijie Wang,Jiayang Jin,Mengyao Zhao,Xiaofeng Hang,Liming Zhao
Selenium supplements are beneficial to human health, however, concerns regarding the toxicity of inorganic selenium have stimulated research on safer organic compounds. The main objective of this study was to develop a novel glucosamine-selenium compound (Se-GlcN), clarify its structure, and subsequently investigate its oral toxicity and in vitro anti-hepatitis B virus (HBV) activity. Electron microscopy, infrared, ultraviolet spectroscopy, nuclear magnetic resonance and thermogravimetric analyses revealed a unique binding mode of Se-GlcN, with the introduction of the Se-O bond at the C6 position, resulting in the formation of two carboxyl groups. In acute toxicity studies, the median lethal dose (LD 50 ) of Se-GlcN in ICR mice was 92.31 mg/kg body weight (BW), with a 95% confidence interval of 81.88 to 104.07 mg/kg BW. A 30-day subchronic toxicity study showed that 46.16 mg/kg BW Se-GlcN caused livers and kidneys damage in mice, whereas doses of 9.23 mg/kg BW and lower were safe for the livers and kidneys. In vitro studies, Se-GlcN at 1.25 μg/mL exhibited good anti-HBV activity, significantly reducing HBsAg, HBeAg, 3.5 kb HBV RNA and total HBV RNA by 45%, 54%, 84%, 87%, respectively. In conclusion, the Se-GlcN synthesized in this study provides potential possibilities and theoretical references for its use as an organic selenium supplement.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）